Eric Mackenzie, Cam McCarthy and Hayden Ballantyne all involved

The Geelong legend understands that West Coast defender Eric Mackenzie will head to Greater Western Sydney, GWS forward Cam McCarthy will join Fremantle and Dockers veteran Hayden Ballantyne will cross to the Eagles.

Mackenzie has experienced a stunning fall from grace since winning West Coast’s club champion award in 2014.

He suffered a season-ending knee injury in February 2015 and could only manage 13 games this year, spending most of the second half of the season in the WAFL.

If Mackenzie headed to Spotless Stadium, he would bolster the Giants’ key defensive stocks spearheaded by Phil Davis, Joel Patfull and Adam Tomlinson.